Home / 143,368.28-197,853.32-78,842.40

Finding the Fourth Proportional to 143,368.28, 197,853.32 and 78,842.40

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Solution

The fourth proportional to 143,368.28, 197,853.32 and 78,842.40 is: 108,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,368.28 : 197,853.32 = 78,842.40 : x
  2. Step 2: Convert to fraction form
    143,368.28/197,853.32 = 78,842.40/x
  3. Step 3: Cross multiply
    143,368.28x = 197,853.32 × 78,842.40
  4. Step 4: Simplify right side
    143,368.28x = 15,599,230,596.77
  5. Step 5: Solve for x
    x = 15,599,230,596.77/143,368.28
  6. Step 6: Final answer
    x = 108,805.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.